Product
Series
Output
Load
VCXO (Voltage Controlled Crystal Oscillator)
GF576
CMOS Square Wave
15 pF
MERCURY
Since 1973
●
RoHS compliant and Pb-free product
●
Up to 800 MHz from low phase noise and low jitter PLL.
●
Low cost and high performance.
●
0.4 ps phase jitter
●
Ideal for ADSL and SONET.
Absolute Maximum Ratings:
Parameter
Supply Voltage
Input Pin Voltage
Power Dissipation
Min.
-0.3 V D.C.
V
SS
-0.3 V D.C.
Max.
+4.6 V D.C.
V
DD
+0.3 V D.C.
100 mW
Note
V
DD
-V
SS
Environmental Performance Specifications
RoHS Status
Reflow
Moisture Sensitivity Level
Humidity
Gross and Fine Leak
Solderability
Temperature Cycling
Resistance to Soldering Heat
Resistance to Solvents
Vibration
Shock
ESD Rating
Storage Temperature
Output Waveform:
RoHS Compliant and Pb (lead) free
260°C for 10 sec. IPC/JEDEC J-STD-020C
Level 1
85% RH, 85°C, 48 hours
Leak rate 2x10
-8
ATM-cm
3
/sec max.
MIL-STD-883F method 203.8
MIL-STD-883E method 1010
MIL-STD-202G method 210F
MIL-STD-202F, method 215J
MIL-STD-883F method 2007.3A,
MIL-STD-883F method 2002.3 B,
2 KV max. Human body model.
-55°C to +125°C
Frequency Deviation
80% wave from
+150
+130
+110
+90
+70
+50
+30
0
-30
-50
-70
-90
-110
-130
-150
Freq. Deviation
(ppm)
T
r
T
f
(postive
transfer)
3GF576
CMOS
V
OH
50% wave form
V
OL
T
H
T
Duty Cycle = (T
H
/ T) x100%
20% wave form
Control Voltage
0.3 V
1.65 V
MERCURY
www.mercury-crystal.com
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427,
FAX (1)-909-466-0762,
e-mail:
sales-us@mercury-crystal.com
MERCURY
Page 1 of 3
Date: Nov. 1, 2006
Rev. 0
3.0 V
General Specifications
T
A
=+25°C, at specified voltage, CL=15 pF
GF576
V
DD
= +3.3 V D.C. ±10%. Voltage code is“3”
38 MHz ~ 640 MHz
Low phase noise low jitter PLL.
6 pad ceramic leadless SMD. 5x7x1.8 mm.
To tune to the nominal frequency with control voltage Vc = 1.65V±0.2V
90%
of
V
DD
min.
10%
of
V
DD
max.
“A”: ±25 ppm over 0°C to +70°C
“B”:±50 ppm over 0°C to +70°C
“C”:±100 ppm over 0°C to +70°C
For non-standard please specify desired frequency stability after the “C”.
For example “C20” is ±20 ppm over 0 to +70°C
“D”:±25 ppm over -40°C to +85°C
“E”:±50 ppm over -40°C to +85°C
“F”:±100 ppm over -40°C to +85°C
For non-standard please specify desired frequency stability after the “
I
”.
For example “
I
20” is ±20 ppm over -40 to +85°C
<100 MHz: 30 mA max.; 100~320 MHz: 40 mA max.; >320 MHz: 70 mA max.
15 pF
5 n sec. max; 3 n sec. typical. 15 pF load.
Measured between 20% and 80% of the wave form.
45% min. 55 % max. (measured at 50% of the wave form)
10 m Sec. max. 3 m Sec. typical
+0.3 V to +3.0 V
+1.65 V
From ±50 ppm to ±120 ppm.
To define the deviation range please use
“N” for minimum (no less than the deviation specified);
“M” for maximum (no more than the deviation specified)
“T” for typical (±20% of the range specified).
10% max.; 6% typical
Positive:
Increasing control voltage increases output frequency.
25 kHz min. measured at -3 dB with Vcon=1.65V
60 KΩ. min.
Output is enabled when no connection or
≥0.9
V
DD
is applied to pad 2.
Enable time is 100 n sec max.
Output is disabled and high impedance when
≤0.1V
DD
is applied to pad 2.
Disable time is 100 n sec max.
±5 ppm per year max.
10 Hz
100 Hz
1 KHz 10 KHz
100 KHz
1 MHz
10 MHz
-66
-96
-124
-136
-132
-145
-149
-62
-92
-120
-132
-128
-144
-150
-59
-86
-116
-129
-124
-140
-148
-48
-80
-108
-118
-114
-131
-138
77.760 MHz
155.520 MHz
311.020 MHz
622.080 MHz
0.64 ps typical
0.46 ps typical.
0.46 ps typical
0.51 ps typical.
4.5 ps typical
3.0 ps typical
4.0 ps typical
6.0 ps typical
32 ps typical
20 ps typical
28 ps typical
40 ps typical
180 mm reel, 16 mm tape, 1000 pcs per reel.
Product Series
Input Voltage (V
DD
)
Frequency Range
Circuit Design
Package Type
Initial Frequency Accuracy (at+25°C)
Output Voltage HIGH “1”
Output Voltage LOW “0”
Frequency Stability
Commercial Temperature Range
(code “C”)
Industrial Temperature Range
(code “
I
”)
(1)
Current Consumption
Output Load
Rise Time (Tr) and Fall Time (Tf)
Duty Cycle
Start-up Time (Ts)
Control Voltage Range
Control Voltage Center (Vc)
Voltage Control
Characteristics
(pad No. 1)
Aging
Offset
Phase Noise dBc/Hz (77.760 MHz)
dBc/Hz (155.520 MHz)
(measured with
Vcon =0 V)
dBc/Hz (311.020 MHz)
dBc/Hz (622.080 MHz)
Integrated Phase Jitter
Jitter
(12 KHz~20 MHz)
(1)
Frequency Deviation Range
Linearity
Slope Polarity
(Transfer Function)
Modulation Bandwidth
Input Impedance
Tri-State Control
Characteristics
Period Jitter – RMS
Period Jitter – peak to peak
Packaging
Inclusive of 25°C calibration tolerance, stability over operating temperature range, ±10% supply voltage variation,
±10% load variation, aging, shock and vibration.
MERCURY
Page 2 of 3
Date: Nov. 1, 2006
Rev. 0
Part Number Format and Example:
Example:
3GF576A-100N-155.520
Explanation:
+3.3V GF576 series VCXO, 155.520 MHz, frequency stability is ±25 ppm over 0°C to +70°C,
frequency deviation range is ±100 ppm minimum.
: customer to specify
3
GF576
A
— 100
N
—
155.520
:
Voltage code: “3” for +3.3 V
; :
GF576 product series
:
Frequency stability code: “A” ~ “F” or
custom. See table above
. :
Frequency deviation range in ppm;
:
Deviation range code: “N” is minimum;
“M” for maximum; “T” for typical (±20%)
; :
VCXO Frequency in MHz
GF576 Test Circuit
Frequency counter
A
6
5
4
Phase Noise:
Typical value.
Oscilloscope
+
-
Vcc
+
-
V
1.0
uF
1
GF576
MEC
2
3
15 pF
V control
-
+
Package Dimensions and suggested Pad Layout:
unit: mm [inches]
For proper power line filtering, a 0.01 uF ceramic decoupling capacitor is required between the V
DD
and ground.
For better performance, add a 0.1 uF tantalum capacitor in parallel with the 0,01 uF.
[0.275±0.006]
7.00±0.15
6
4
5
2.54[0.100]
0.6[0.024]
[0.049]
1.25
4
3
5
R0
.7
2
6
1
[0.055]
1.4
[0.197± 0.006]
5.00±0.15
GF576
MEC
1
2
3
1.8±0.1
[0.070 ± 0.004]
5.08 [0.200]
typical
bottom view
1.5[0.059]
2.0[0.079]
[0.004]
0.1
Pad 1 Control Voltage Pad 4 Output
Pad 2 Tri-State
Pad 5 No Connection
Pad 3 Ground
Pad 6 Supply Voltage
5.08 [0.200]
Rounded pad is pad No. 1. Count counter-clockwise when looking at top view.
Count clockwise when looking at bottom view.
MERCURY
Page 3 of 3
Date: Nov. 1, 2006
1.8[0.071]
Rev. 0
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